1480721557 has 8 divisors (see below), whose sum is σ = 1699644800. Its totient is φ = 1263646224.

The previous prime is 1480721551. The next prime is 1480721597. The reversal of 1480721557 is 7551270841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1480721557 - 2²³ = 1472332949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1480721551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460257 + ... + 463462.

It is an arithmetic number, because the mean of its divisors is an integer number (212455600).

Almost surely, 2^1480721557 is an apocalyptic number.

It is an amenable number.

1480721557 is a deficient number, since it is larger than the sum of its proper divisors (218923243).

1480721557 is an equidigital number, since it uses as much as digits as its factorization.

1480721557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923955.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 1480721557 is about 38480.1449711406. The cubic root of 1480721557 is about 1139.7890132263.

The spelling of 1480721557 in words is "one billion, four hundred eighty million, seven hundred twenty-one thousand, five hundred fifty-seven".